Eleven people, including nine security personnel, were Friday injured when a protest against alleged rape of three women by armymen in Assam's Karbi Anglong area turned violent with the protestors pelting stones at police prompting them to open fire.

The 1,000 hour Karbi Anglong bandh called by Joint Action Committee for Autonomous State (JACAS) began on Monday morning, affecting the normal life and vehicular movement on highways passing through the district.

In a major joint police and Army operation in Assam`s Karbi Anglong district, five wanted militants of the Karbi Peoples Liberation Army (KPLT) including its general secretary were arrested on Thursday.

Heavy exchange of fire broke out when unidentified people from Nagaland side allegedly opened fired on workers and security personnel engaged in eviction operation against encroachers in Karbi Anglong district of Assam today leaving a labourer injured.

Six militants of Karbi Peoples` Liberation Tigers (KPLT), including its self-styled Commander-in-Chief, were killed in an encounter with security forces in Assam`s Karbi Anglong district on , police said.

Security measures have been stepped up following threats from militants in Assam`s Karbi Anglong district, falling in sensitive Autonomous District (ST) constituency, going to polls in the second phase on April 12.